| G.Rae Property Limited | Real estate | 2026 |
| G.T. Leadbitter & SON Limited | Information & communication | 1994 |
| G188 Ltd | Real estate | 2026 |
| G2 Properties Newcastle Ltd | Real estate | 2023 |
| G4 Civil Engineering Limited | Administrative & support | 2012 |
| G4G Services Limited | Construction | 2022 |
| G66 UK Limited | Wholesale & retail | 2022 |
| G7 Recruitment Ltd | Administrative & support | 2022 |
| GA Collection Ltd | Households | 2025 |
| GA Foods Wholesale Ltd | Wholesale & retail | 2020 |
| GA Retail Services Limited | Administrative & support | 2001 |
| GA4OR Wholesale Ltd | Wholesale & retail | 2019 |
| GAB Asset Investment Ltd | Real estate | 2023 |
| Gabriel Group Limited | Financial services | 2020 |
| Gabriella Leisure Limited | Hospitality | 2020 |
| Gackou Services Limited | Transport & logistics | 2024 |
| Gadais Ltd | Hospitality | 2025 |
| Gads Insulation Services Limited | Construction | 2014 |
| Gainchill Entertainment Limited | Information & communication | 2025 |
| Gainford Engineering Consultants Limited | Professional & scientific | 2010 |
| Gains Group Ltd | Real estate | 2020 |
| Gainsbio Ltd | Professional & scientific | 2025 |
| Gainwood Limited | Real estate | 2019 |
| Galava Midco 1 Limited | Financial services | 2021 |
| Galava Midco 2 Limited | Financial services | 2021 |
| Galava Topco Limited | Financial services | 2021 |
| Galaxy Energy Solutions Limited | Wholesale & retail | 2016 |
| Galaxy Family Ltd | Real estate | 2024 |
| Galaxy Industrial Supplies Ltd | Wholesale & retail | 2015 |
| Galileo Sciences Ltd | Financial services | 2023 |
| Gallery 108 Limited | Other services | 2012 |
| Gallivanting Pictures Limited | Information & communication | 2001 |
| Gallowgate East Corner Ltd | Real estate | 2025 |
| Galoot Ltd | Professional & scientific | 2025 |
| Gamarra Consultancy Ltd | Professional & scientific | 2017 |
| Game Golf Community Interest Company | Arts & recreation | 2023 |
| Game OWA Studios Ltd | Information & communication | 2024 |
| Game Way Ltd | Information & communication | 2023 |
| Gameplan James Limited | Financial services | 2021 |
| Gaming Venues Ltd | Arts & recreation | 2021 |
| Gamnorth Community Group CIC | Education | 2025 |
| GAN Pots Ltd | Manufacturing | 2026 |
| GAN Walkies Ltd | Other services | 2026 |
| Gang of Four Coffee Ltd | Manufacturing | 2021 |
| Gang of Wonders Studio Ltd | Professional & scientific | 2023 |
| Gangineni Trading Limited | Wholesale & retail | 2020 |
| Ganita Corp Limited | Professional & scientific | 2013 |
| Ganita Wealth Limited | Other services | 2012 |
| Ganzfeld Ltd | Professional & scientific | 2025 |
| Gaoss Union Ltd | Wholesale & retail | 2025 |
| Garage Conversions North East Limited | Professional & scientific | 2024 |
| GARAGE2LIFESTYLE Limited | Construction | 2025 |
| Garden House Rentals Limited | Real estate | 2024 |
| Garden Mews (Blaydon) Management Company Limited | Real estate | 2021 |
| Garden of Gold Ltd | Other services | 2024 |
| Gardencleaningpro Ltd | Wholesale & retail | 2022 |
| Gardener Leisure Limited | Arts & recreation | 2015 |
| Gardners Optical Limited | Wholesale & retail | 2024 |
| Garmer Holdings Limited | Financial services | 2017 |
| Garmstrong Services Ltd | Manufacturing | 2026 |
| Garwil Enterprises Limited | Administrative & support | 2008 |
| Gary Canham Construction Ltd | Construction | 2015 |
| Gary Cook of Newburn Limited | Transport & logistics | 2007 |
| Gary Davison Construction Limited | Construction | 2012 |
| Gary Fradgley Ltd | Extraterritorial | 2024 |
| Gary Hall Joinery Limited | Construction | 2007 |
| Gary Mutimer Ltd | Administrative & support | 2025 |
| GAS 24/7 Ltd | Construction | 2016 |
| GAS Angel Heating Services Ltd | Construction | 2007 |
| GAS Care Northeast Ltd | Construction | 2017 |
| GAS FIX Sols Ltd | Construction | 2024 |
| Gasha Ltd | Other services | 2024 |
| Gasigen Limited | Administrative & support | 2015 |
| Gaswork 247 Ltd | Construction | 2025 |
| Gasworx North East Ltd | Construction | 2024 |
| Gateland (North East) Limited | Manufacturing | 2003 |
| Gatesafe International Ltd | Construction | 2016 |
| Gateshead Car Sales Ltd | Wholesale & retail | 2022 |
| Gateshead High Street Regeneration Ltd | Real estate | 2024 |
| Gateshead Stadium Panto Ltd | Arts & recreation | 2018 |
| Gateshead Tyres Ltd | Wholesale & retail | 2024 |
| Gateshead Westview Ltd | Hospitality | 2026 |
| Gateway Vehicle Management Limited | Manufacturing | 2018 |
| Gator Creator Ltd. | Professional & scientific | 2017 |
| Gatwick Handling Limited | Professional & scientific | 1994 |
| Gauntlett Holdings Ltd | Financial services | 2024 |
| Gaurinandan Ltd | Wholesale & retail | 2025 |
| Gaussian Games Limited | Information & communication | 2021 |
| Gavin Hedley Engineering Ltd | Professional & scientific | 2014 |
| Gavroche Property Limited | Professional & scientific | 2020 |
| Gavurin Ltd | Information & communication | 2007 |
| Gavurin RC Limited | Information & communication | 2017 |
| Gawan Services Ltd | Professional & scientific | 2023 |
| GAZ Summers Builders Ltd | Construction | 2024 |
| GB Coatings (NE) Limited | Professional & scientific | 2013 |
| GB Endeavour IT Ltd | Information & communication | 2022 |
| GB Facilities Ltd | Transport & logistics | 2023 |
| GB Holiday Parks Limited | Hospitality | 2001 |
| GB Outfitters Limited | Wholesale & retail | 2012 |
| Gb-Tech Ltd | Professional & scientific | 2025 |